Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Pontiac Firebird Formula, AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| Accelerator & Servo Control Module | Under left side of dash, near kick panel. |
| Amplifier (Radio) | Behind right rear quarter inner trim panel. |
| Body Control Module (BCM) | Mounted to HVAC module, above right dash insulator panel. |
| Brake Malfunction Indicator Lamp Driver Module | Behind center of dash, near HVAC control. |
| Cruise Control Module | In engine compartment, on left frame rail, forward of wheelwell. |
| Daytime Running Lamps (DRL) Module | Mounted behind radio & HVAC controls, left of glove box. |
| Electronic Brake & Traction Control Module (EBTCM) | On top of left front frame rail. |
| Electronic Brake Control Module (EBCM) | On top of left front frame rail. |
| Electronic Ignition Control Module (ICM) (3.8L VIN K) | At front end of left cylinder head. See Figure . |
| Engine Coolant Level Indicator Module | Mounted on upper right side of radiator. |
| Headlamp Opening Door Actuator Control Module (Firebird) | In engine compartment, forward of left wheelwell. |
| Ignition Coil Module (5.7L VIN G) | On valve cover, on top of each cylinder. |
| Inflatable Restraint Sensing & Diagnostic Module (SDM) | Below rear of console. |
| Power Seat Cushion Air Control Module | Under passenger's seat. |
| Power Window Control Module | On center of dash mat, above floor tunnel. |
| Powertrain Control Module (PCM) (3.8L VIN K) | In engine compartment, behind right strut tower. See Figure . |
| Powertrain Control Module (PCM) (5.7L VIN G) | In engine compartment, behind right strut tower. See Figure . |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.